vba list tables in access database
Inclusion of new types in relational database systems
... described in [ONG84]. Our initial experience with the system is that dynamic linking is not preferable to static linking. One problem is that initial loading of routines is slow. Also, the ADT routines ... White Plains, N.Y., June 1980. [KOOI82] Kooi, R. and Frankfurth, D., "Query Optimization in INGRES," IEEE Database Engineering, September 1982. [LITW80] Litwin, W., "Linear Hashing: ... coordinates (0, 1, 0, 1). The following is a compact representation of this request in QUEL: 2 installation wants at the time the DBMS is installed. In this case, all routines could be linked into...
Ngày tải lên: 22/10/2013, 10:15
Executing Commands that Modify Information in the Database
... Finally, you execute the INSERT statement using the ExecuteNonQuery() method: int numberOfRows = mySqlCommand.ExecuteNonQuery(); The ExecuteNonQuery() method returns an int value that indicates ... Customers table. DisplayRow() is used in the program to show the result of the INSERT and UPDATE statements. Listing 8.7: EXECUTEINSERTUPDATEDELETE.CS /* ExecuteInsertUpdateDelete.cs illustrates ... mySqlDataReader["CompanyName"] = New Company Number of rows deleted = 1 Executing DDL Statements Using the ExecuteNonQuery() Method In addition to running INSERT, UPDATE, and DELETE statements, you can also use the...
Ngày tải lên: 24/10/2013, 08:15
Connecting to an Access Databasefrom ASP.NET
... folder containing the database files. The user account requires permissions to access the share that contains the database file and folders. The user account must be recognized by the Access computer. ... article Q248187. The Microsoft Jet engine uses the TEMP folder on the IIS computer that is accessing the Access database. The user identity requires NTFS (Windows NT File System) full- control ... configured. Configure the Access server On the Access computer, the user account that is used to access the database requires Read, Write, Execute, and Change permissions on the database file. The...
Ngày tải lên: 07/11/2013, 13:15
Tài liệu Managing time in relational databases- P1 ppt
... data in which none of that is necessary, a world in which all pipeline datasets are contained in the single table that is their destination or their point of origin. In this world, maintaining ... of managing temporal data introduced in this book will enhance systems used in education, finance, health care, insurance, manufacturing, retailing and transportation—all industries in which ... of InBase, Inc., has more than 24 years of experience in IT, specializing in enterprise data architecture, including the logical and physical modeling of very large database (VLDB) systems in...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P2 pptx
... management losing faith in data warehouse projects. As these large projects fell increasingly behind schedule and rose increasingly over budget— something large projects tend to do—the pressure increased to ... columns. In addition, developers were also beginning to create on-line transaction tables by bringing collections of transactions back from off-line storage media, transactions that originally ... first restoring them from off-line storage media. After that, the next step was to realize that there was value, not just in having a par- ticular set of backup data remain on-line, but also in having...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P3 doc
... point in time forward to the point in time we are interested in. But the defining feature of reconstructable methods is not the movement of data from off-line to on-line storage. The defining ... waiting for the data, and the decisions delayed until the data becomes available. In an increasingly fast-paced business world, the opportunity cost of delays in accessing data is increasingly ... or update multiple rows in tables by coding a loop. In doing so, we are writing a procedure; we are telling the computer how to retrieve the rows we are inter- ested in. So we wrote these loops,...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P4 pptx
... applied to a database by also inter- nalizing them within their target tables. In this book, we will show how the use of these internalized managed objects reduces the costs of maintaining databases ... represented in an asserted version 48 Part 2 AN INTRODUCTION TO ASSERTED VERSIONING which contains data destined for production tables are inflow pipeline datasets. Pipeline datasets which contain data ... is used in an Asserted Versioning database to delimit the two time periods of rows in asserted version tables, and also to indicate several important points in time. In asserted version tables, ...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P5 pptx
... just one kind of internalized pipeline dataset, and the internalization of pipeline datasets can eliminate a large part of the IT maintenance budget by eliminating the need to manage pipeline datasets ... perhaps joining data that the production queries did not have to join, perhaps assembling intermediate results and then combining those intermediate results in various complicated ways. In short, ... is the SQL statement that inserted or most recently altered the data in that table. In each table, primary key columns are indicated by under- lining their column headings. In each table, the italicized...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P6 pptx
... semantic constraints on bi-temporal data as that data is maintained, Asserted Versioning makes queries against its tables nearly as easy to write as queries against conventional tables. In the final section ... a business user says that a policy should be deleted, she is (or should be) making a business statement. She is saying that as of a given point in time, the policy is no longer in effect. In a ... handled in tempo- ral gap version tables. 1 We use hyphens in column names in the illustrations, because underscores are more difficult to see inside the outline of the cell that contains them. In...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P7 pdf
... truth. Temporal Integrity Constraints The three integrity constraints in relational theory are entity integrity, referential integrity and domain integrity. Entity integ- rity insures that the ... VERSIONING 113 of those nine categories, and that find all of that data in the same tables that, in today’s databases, contain only current data, is precisely what we mean by seamless access ... data, indeed to datatypes. Domain changes are one form of what computer scientists call schema evolution. Adding or removing tables, altering primary or foreign keys, and adding or removing non-key...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Managing time in relational databases- P8 pptx
... within shared assertion time, even a single effective-time clock tick included in another version of that object already in the table. Most physical transactions against bi-temporal tables are inserts. ... of the version which contains the refer- ring TFK. And it is one of the responsibilities of the Asserted Versioning Framework to insure that for every TFK instance in a database, there is exactly ... are known. Perhaps in another insurance company, all policies stop being in effect at the end of each calendar year. In that case, instead of an effective end date of 12/31/9999 in rows 1 and 3,...
Ngày tải lên: 24/12/2013, 02:16
Tài liệu Connecting to a Password-Protected Access Database ppt
... connection string attributes in addition to those defined by ADO.NET. To open a database secured by a Microsoft Access database password, use the Jet OLEDB :Database Password attribute in the connection ... resultTextBox.Text = result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database objects. This is also ... have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. The Set Database command from the Tools Security menu is used to set up a database...
Ngày tải lên: 24/12/2013, 05:15
Tài liệu Connecting to a Secured Access Database pptx
... { StringBuilder result = new StringBuilder( ); // Build the connection string with security information. String connectionString = ConfigurationSettings.AppSettings["MsAccess_ConnectString"] ... Jet OLEDB:System Database attribute in the connection string to specify the path and filename of the workgroup information file or system database. The sample code contains a single event handler: ... code is shown in Example 1-4 . Example 1-4. File: AccessSecureForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using System.Data.OleDb;...
Ngày tải lên: 24/12/2013, 05:15
Tài liệu Creating a New Access Database pptx
... the CreateAccessDatabase( ) method in the sample to create the database. CreateAccessDatabase( ) This method uses ADOX through COM interop to create the new Access database having the specified ... Recipe 10.6 Creating a New Access Database Problem You need to create a new Microsoft Access database. Solution Use ActiveX Database Objects Extensions (ADOX) from .NET through COM interop. You'll ... Of OK selected, create the Access database. String fileName = sfd.FileName; try { CreateAccessDatabase(fileName); MessageBox.Show("Microsoft Access database " + fileName...
Ngày tải lên: 24/12/2013, 05:15
